Asymmetric coplanar strip based stepped monopole sensor for liquid permittivity measurements
| Autor: | Mohanan Pezholil, Manoj Mani, Remsha Moolat |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Permittivity
Complex permittivity Materials science Computer Networks and Communications Asymmetric coplanar strip (ACS) Reflection phase difference Phase (waves) Radiation efficiency Dielectric Stepped monopole Biomaterials Reflection coefficient Sensitivity (control systems) Electrical impedance Civil and Structural Engineering Fluid Flow and Transfer Processes business.industry Mechanical Engineering Metals and Alloys Engineering (General). Civil engineering (General) Electronic Optical and Magnetic Materials Antenna efficiency Hardware and Architecture Reflection (physics) Optoelectronics TA1-2040 business Microwave |
| Zdroj: | Engineering Science and Technology, an International Journal, Vol 32, Iss, Pp 101063-(2022) |
| ISSN: | 2215-0986 |
| Popis: | Investigation of dielectric properties of materials has significant applications in the current scenario. A high sensitive microwave submersible sensor for measuring complex permittivity of liquids over a broad range is presented in this paper. An asymmetric coplanar strip (ACS) fed stepped monopole is employed as the sensing element, and the impedance contrast in the stepped monopole maximizes the sensor’s sensitivity. The sensor is immersed in the liquid sample, and its resonant frequency is exploited to determine the real part of permittivity, and the reflection phase or the radiation efficiency is utilized for the imaginary part of permittivity. Analysis of the sensor, loaded with liquid samples of various dielectric constants and loss tangents, is presented in this paper. The proposed sensor operating at 5.3 GHz under unloaded condition has a maximum numerical sensitivity of 13.7%. The sensor is fabricated and experimentally validated with liquids with dielectric constant ranging from 2–78. The proposed sensor is utilized to measure the glucose concentration in an aqueous glucose solution and the concentration of ethanol blending in petrol. |
| Databáze: | OpenAIRE |
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